Alarm for paper-feed carriages.



No. 885,443. PATENTED APR. 21, 1908.

P. H. GOTTRILL.

ALARM FOR PAP ER FEED GARRIAGES.

APPLICATION FILED JAN.25, 1906.

FRANK H; .GOTTRILL, OF MILWAUKEE, WISCONSIN.

Kmart 103 PAPER-FEED GARRIAGES.

Specification of Letters Patent.

Patented April 21, .1908.

Application filed January 26, 1908. Serial No. 297,882.

My invention pertains to paper carriage signals for adding machines and the like, its object being to rovide a device which will, when the paper is about to run off the printing roller, give an alarm. I

The invention consists in certain peculiarities of construction and combination of parts to be fully set forth hereinafter with reference tothe accompanying drawings and subsequentl claimed.

In t edr'awings: tion'of an adding machine paper carriage with my alarm device attached thereto. Fig. 2 is a detail view of the printing roller and alarm -actuating finger, partly in-section as indicated by line 22.

', Referring by letters to the drawings; A is the carriage bracket having mounted thereon B which carries the a longitudinally adjustable swinging carriage rinting roller 0 over which the paper is for? by the feed disks D. These disks are intermittently revolved by a pawl a and ratchet b mounted upon the shaft 0 and impart motion to the rinting roller by frictional contact whenthe atter is in printing position; The pawl a is carried by an arm e loosely mounted on the shaft of the feed disks and is driven by a rod f connected to an arm g fast on a stud h. This stud has secured thereto the feed lever 11 which is moved in the direction of the'arrow by the adding machine mechanism (not shown) each time a printing operation is made, and said lever is returned to its position of rest by a spring secured to the carriage bracket A and the ever i. Loosel mounted upon a shaft E of the carriage racket is a dog 1 having a tail piece 2 and near its end is pivoted a lever 3 having a pin 4 for engagement with a trigger 5. The lever and trigger are mounted upon the same pivot with a spring 6 secured to the former resting'u on t e side of the trigger so as to hold the atter in contact with the pin 4 of lever 3 which also carries at its upper end .a spring bell hammer 7. Another spring 8 is connected to the aforesaid lever anda post 9 Figure 1 is a crosssec-' .dog 1.

groove 17 opposite it.

projecting from the dog 1 and serves to hold the bell hammer in osition by a stop-pin 10 projecting from sai "dog and against which the lever 3 rests; The post 9 has secured to its upper end a hell 1 1 against which the hammer 7 strikes when actuated by means of a lug 12 carried by the feed lever i.

The trigger 5 is normally held out of the ath of the lug 12 by an extension 13 of a ger 14, which presses against the tail of This finger is pivoted to an eye-bolt 15 fastened to the carriagebracket A and is curved upward, its free end carrying an anti friction roller 16 which rests upon the paper when the latter is in position around the printing roller 0 and is held against the paper y the weight of the dog 1.

The printing roller 0 is provided with annular or circumferential grooves or recesses 17 which are so arranged that one of said grooves will come directly over the anti-friction roller when said roller 0 is adjusted longitudinally for printing in various columns of figures. v

In'practice it frequently happens through inadvertence or otherwise, thatan operator fails to detect that the paper has been entirely fed from the prin tlng roller or that it has been fed too far to permit a total to be obtained of the column of figures. In the first instance the consequence may be that the operator will continue his list and print a portion of the same on the bare printing r0 er and be thus compelled to reprint an entirely new list. This would also be the case if the pa or had been fed past the printingupoint be ore a total had been obtained. y resent device entirely overcomes the poss1b1 ity of such accidents as the anti-friction roller is set a sufiicient distance from the printing point so that when the paper passes a certain pointon said roller, an alarm will be given in time for the operator to print one or more amounts before the paper is fed entirel off the roller.

T e operation of the invention is as follows: The several arts being in the position shown in Fig. 1 oi the drawings, w1th each rinting operation the feed lever i is rocked Forward, and as lon as the pa er is between the antifriction rol er 16 an roller 0, it will hold the dog 1 in its present position, but as soon as the paper asses said anti-friction roller, the latter will rop in the This will cause the finger 14 to 1136 thereby permitting the dog to drop until the trigger 5 comes in the path the printing.

of the lug 12, and when the feed lever 11 is again moved forward, it will, through said lug, rock the bell hammer and cause the bell to be struck thus giving notice in advance that the operator must now make a total or shift the carriage. The bell thereafter will continue to ring with each operation of the adding machine until another sheet of pa er is inserted around the printing roller which 0 eration will lift the anti-friction roller out 0 its groove and again restore the several parts to their normal position.

Various modifications in the details of construction may be made without depart ing from the principle and intended scope of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters-Patent, is:

1. In a signal forpaper-feeding devices for printing-machines, comprising an annular grooved printing-roller, an actuatingmechanism for the printing-roller, an operatinglever for the actuating-mechanism, and a pivoted finger adapted to engage the printing-roller grooves; the combination of a piv oted gravity-controlled dog arranged to oppose the finger and thereby tend to press said finger into a groove of said roller, a bell secured to the dog, and a spring-controlled pivoted bell-hammer for the bell carried by pivoted finger adapted to engage an one of the printing-roller grooves; the com ination' of a pivoted gravity-controlled dog, a tailpiece projecting from the dog upon one, side of its pivot, and arranged to oppose the finger, a bell carried by said dog, a bell-hammer pivoted to the aforesaid dog upon the opposite side of its pivot from that of the ta' -piece, the bell-hammer being adapted to engage the operating-lever of the actuating-mechanism when said finger engages an one of the roller-grooves.

n testimony that I claim the foregoing I have hereunto set my hand at Milwaukee in the county of Milwaukee and State ofWiscousin in the presence of two witnesses.-

FRANK H. COTTRILL I Witnesses:

GEORGE FELBER, L. A. THOMPSON. 

